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Dolby Laboratories DP570 Stereo System User Manual

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DP570 Multichannel Audio Tool User’s Manual

Using the DP570 in Postproduction Typical Activities

7.2 Typical Activities

TheDP570isusedinthemonitorchaintoemulateconsumerʹslisteningenvironment.

7.2.1 Measuring Dialogue Level

Asthemixisnearingcompletion,usethedialoguelevelindicatorsduringarepresentative

periodofspeechtodetermineandselecttheDialogueLevelvaluefortheprogram.The

measuredvaluefromprogrammaterialappearsinyellownumbers(–26inFigure 7‐2).The

DialogueLevelvaluesetinthesof tware

appearsingreennumbers(–27inFigure 7‐2).

Figure 7-2 Dialogue Level Controls

Ifitisnecessarytochangethevalueinthesoftware,presstheAcceptbutton.Thesystem

willtransferthenumberappearinginthemeasuredvaluewindowtothedialnormvalue

window,andsettheparameterautomatically.

Inmostcases,selectingandmeasuringarepresentativeperiodofspeechwithinthe

program

willserveasagoodexampleoftheoveralldialoguelevelthroughoutthe

program,providedgoodmixingpracticesareobserved.Insomecases,(documentaries,

locationsound,andsoon),itmaybedifficulttomatchthedialoguelevelfromsectionto

section.Inthesecases,whilethedialoguelevelindicatorson

theDP570canhelp,yourears

arethebesttooltoachievethebestbalance.

Inmostcases,short‐termmeasurementsarebestformonitoringduringeditingasthey

provideameasurementovereachten‐secondperiodofprogramaudio anddonotaverage

themeasurementoveralongperiodof

time.Foralongersectionofprogramthatwillbe

playedbackonce,aninfinitemeasurementcanbeusedasitwillintegratethemeasured

valueofthesignaluntilthemeterismanuallyreset,and,overthesinglepass,willreturn

theaverageleveloftheprogram(presumablyspeech

content)forthatsection.Formore

informationonthemeasurementmodes,seeMeasuringtheAverageLoudnessof

IdentifiedClipsonpage 31.

For5.1programming,measuretheCenterchannel,asmostoftheimportantspeechcontent

occursinthischannel.Forstereoprograms,measureboththeLeftandRightchannels.

7.2.2 Monitoring the Dialogue Level

Asyouwork,checkthedialoguelevelindicator—theyellownumbersshownin

Figure 7‐2—frequently.

OnceaDialogueLevelvaluehasbeenselected,eithershort‐termorinfinitemeasurements

canbeuseddependingonyourpreference.SeeMeasuringtheAverageLoudnessof

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